Mixing-valve.



E. P. NIEDEOKEN.

MIXING VALVE.

APPLICATION FILED JUNE 18, 1009,

1,001,481., Patented Aug.22,1911.

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E. F. NIEDEGKEN.

MIXING VALVE. APPLICATION FILED JUNEIB, 1909 2 SHEETS-SHEET 2.

In van t or.

attorneys.

Patented Aug. 22, 1911.

EDWARD F. NIEDECKEN, OF MILWAUKEE, WISCONSIN.

MIXING-VALVE.

Specification of Letters Patent.

Patented Aug. 22, 1911.

Application filed June 16, 1909. Serial No. 502,430.

to limit the discharge of hot water so as to prevent scalding, and generally to improve the construction and operation of apparatus of this class. 1

It consists in the construction, arrangement and combination of parts as hereinafter particularly described and pointed out in the claims.

In the accompanying drawing like characters designate the same parts in the several figures;

Figure 1 is a front elevation of a valve embodying the invention; Fig. 2 is an axial section on the line 2 2, Fig. 1, cutting the inlet chambers; Fig. 3 is a section transverse to the axis on the line 3 3, Fig. 2; Fig. i is a section on the line 4 4, Fig. 2; and Fig. 5 is a section similar to that of Fig. 2, but

showing the valve disksremoved from their seats.

The valve case a, which is preferably made of cylindrical shape open at one end, is provided with a removable cover 6, and

' is formed on opposite sides with inlet chambers c and d and with a mixing and outlet chamber 1, which is connected with the inlet chambers by parallel ports in their upper or outer walls. g

Althou h the valve may be used for regulating an controlling the mixture and delivery of difl'erentfluids for different puring chamber 1.

poses, it is shown and will be described as specially designed to regulate and control the mixture and delivery in variable pro portions of cold ,andhot water for baths and the like. ,The hot water pipeg is connected with the chamber 0, the cold water supply pipe h with the chamber d, and the delivery pipe z with the intermediate mix- The cover 6 is prieferably flanged to fit over the open end of the case, and ma be secured thereto. with an interposedpac 'ng ring or washer by screws as shown. It is provided with a central stuliing box 7' through which the valve operating stem 70 passes and in which it is fitted to turn, being held against endwise movement therein by a collar Z on the stem, and a ring m threaded in. the stuflin box. Within the case the stem is threaded and at its inner or lower end it is provided with a central bearing a between the chambers c and d. A yoke 0 has a central hub or sleeve threaded on the' stem is and is formed equidistant therefrom and parallel therewith in alinement with the ports between the chambers c and (l and the chamber f with openings in which are loosely fitted and retained by screws p, the stems q of valve disksr. These dlsks are formed or provided on the opposite sides from the stems g with threaded stems s on which are screwed graduating plugs t and u, with gaskets or packing rings 4) clamped between them and the disksy':

The upper or outer walls of the chambers c and d are formed around the ports therein with raised seats, and the gaskets or packing rings 1), which are fitted and held in recesses in the disks 1', are adapted to close tightly against said seats, as shown in Fig. 2. The lugs 27 and u have a close working fit in said ports, and are formed with reversely tapered peripheral openings orpassages w and av. In the plug t which regulates the fiow of cold water, ,the openings or passages w diverge toward the disk r and in the plug a which regulates the flow of hot water, the openings or passages a; converge toward the disk 7", terminatin at their apexes some distance from said isk.

The stem'k is provided outside of the case, with an operatin handle y and with an 0, to limit the-opening movement of the plug u. The stop screw 2 is concealed and protected by a cap screw or plug 4, threaded in the cover, a washer or packing ring being interposed between the head of the cap screw or plug to prevent leakage. The valve case may be .formed with a threaded socket 5, as

. shown, for attaching it to a threaded supporting stud or fixture.

In the operation of the valve, the handle y being turned to the right from the shut position in which it is shown in lBigs. 1 and 2, first moves the disks 1- with the packing rings 12 away from their seats. Cold water is thus admitted at once through the tapered pas sages w from the inlet chamber d into the outlet chamber f,,from which it is discharged through the delivery pipe 2'. As the index or pointer m is moved from the point on the cover marked shut to the point marked cold the flow of cold water is gradually increased by the increased opening of the tapered passages w. During this movement of the handle the plug u closes the port between the inlet chamber 0 and the outlet chamber f, and no hot water is admitted to the latter, but as' the index is earried beyond the point marked cold the apexes of the passages w are exposed in'the chamber f and hot water begins to flow into said chamber, where it mingles with the full supply of cold water admitted from the chamber 03. A supply of slightly warm water is thus delivered from the valve through the pipe 2'.

As the handle is turned farther to the right and the index or pointer 2 passes from the point marked cold to the point marked warm the opening of the passages to into the chamber at is gradually restricted, while the opening of the passages 00 into the chamber 7 is gradually increased, thereby increasing the proportion of hot to cold water admitted into the mixing chamber 1 and discharged therefrom through the pi e As the index or pointer passes from t e point marked warm to the point marked -hot the opening of the passages 'w into the chamber at is gradually reduced, while the opening of the passages it into the chamber f is increased until the projection 3 on the yoke 0 engages with the stop screw 2, arresting the further movement of the bandle and opening of the passages m. The hot test water which it is possible to obtain through the valve is now delivered through the pipe 2'.

By the adjustment of the stopscrew 2 according to the varying conditions'with reprevent the spect to the supply of hot water, the opening of the passadges a; may be limited so as to elivery of scalding water from the pipe 2'. 1

' Itwill be observed that the movement of the handle ythrough an arc of about 180 degrees, is suflicient to operate the valves and produce all the desired adjustments thereof, as above explained. Upon turning thehandle'backto' its original position the packing rings are closed tightly against their seats and leakage fromthe inlet chambers 0 and 0? into the mixing and. outlet chamber f 1s stopped; The loose connections between the valve disks 7' and the yoke 0 permit the packlng rings '1) to close squarely against their seats, thereby compensating for slight inaccuracies in the construction of the parts and avoiding leakage.

By removing the screws which fasten the scope of the invention.

1 claim:

1. In a mixing valve the combination of a case having inlet chambers and a mixing and outlet chamber connected with the inlet chambers by ports, valve-disks adapted to close said ports and provided with plugs fitting into the ports and having reversely tapered peripheral openings,"and means for moving said valve disks and plugs axiall with relation to the ports which they contro 2. In a mixing valve'the combination of a 7 case having inlet chambers and a mixing.

and outlet chamber connected by ports with the inlet chambers, valves provided with graduating plugs fitting and movable axially in said ports and respectively having peripheral openings the sides of which converge longitudinally in opposite directions, a yoke connecting said valves, an operating handle connected with said yoke and a concealed adjustable stop for limiting the opening of one valve to prevent scalding.-

3. In a mixing valve the combination of a case having inlet .chambers and a mixing and outlet chamber connected by ports with the inlet chambers, valve di'sks provided with graduating plugs fitting and movable axially in said ports and respectively having pe-- ripheral openings the sides of which converge longitudinally in opposite directions, a yoke connecting said valve disks, a stem journaled in said case and threaded in said yoke, and a handlefor turning said stem.

4. In a mixing valyethe combination of a case having separate inlet chambers on opposite sides thereof and a mixing and outlet chamber connected by parallel ports with said inlet chambers, an operating stem journaled in said case between and parallel with said ports,-h yoke threaded -onsaid stem within the mixing" and outlet chamber,

valve disks having stems on one side loosely confined in said yoke and threaded stems on the opposite side, plugs screwed on sald threaded stems and fitting into said ports and respectively having reversely tapered peripheral openings, and packing rings y valves having graduating plugs fitting into said ports and arranged to diminish the opemng of one port as 1t increases the open mg of the other, a yoke connecting said I valves, an operating stem threaded in said yokeand journaled in the case, an adjustable stop threaded in the caseand adapted by engagement with said yoketo limit the opening of the valve Which controls the hot fluid and a cap covering and concealing said stop.

6. In a mixing valve the combination of a case having inlet chambers, a mixing and outlet chamber connected by ports with the inlet chambers, and a removable graduated cover provided with a stuffing box, axially movable valve disks having graduating plugs fitting into said ports and adapted to diminish the opening of one port as it increases the opening of the other, a stem journa'led in the stufling box of the cover and provided with a handle and an index cooperating with the graduated cover to determine the position of the valve disks, and a yoke connecting said valve disks, and threaded on said stem, the stem, yoke and valve disks being removable bodily with the cover, from the case.

7. In a mixing valve the combination of a case having inlet chambers and a mixing chamber connected by ports with the inlet chambers, valves controlling the flow of fluid through said ports, a yoke connecting said valves, a screw threaded stem for operating said yoke to open and close the valves, and a stop threaded in said case and adjustable toward and from said yoke, the opening movement of which it is adapted to limit.

In witness whereof I hereto allix my signature in presence of two witnesses.

EDWARD F. NIEDEGKEN.

Witnesses:

A. J. PAINTER, CHAS. L. Goss. 

